Process of making substitutes for mother&#39;s milk.



I UNITED STATES PATENT OFFICE.

JOHN MEYENBERG, OF KENT, WASHINGTON.

PROCESS OF MAKING SUBSTITUTES FOR MOTHERS MILK.

SPECIFICATION forming part of Letters Patent No. 682,103, datedSeptember 3, 1901. Application filed July 20, 1900. Renewed February 14,1901. Se i l No. 47,352. (No specimens.)

To all whom it may concern:

Be it known that I, JOHN MEYENBERG, a citizen of the United States,residingin Kent, in the county of King and State of Washington, haveinvented certain new and useful Improvements in Processes of Making aSubstitute for Mothers Milk, of which the following is a specification.

This invention relates to an improved process of making from cows milk asubstitute for mothers milk, the new product being of such a nature thatit can be shipped to anyclimate and preserved for any length of time ingood condition; and the invention consists of the process, hereinafterdescribed, of producing a substitute for mothers milk which consists ofthe following steps: first, aerating fresh cows milk; second, filteringthe same; third, removing the cream from a portion of the milk; fourth,decaseinizing the so-obtained skimmed milk; fifth, filtering the wheythus obtained; sixth, mixing with the whey the separated cream,remaining portion of the milk, and a small quantity of sugar; seventh,filtering and simultaneously heating the milk under exclusion of air,and, lastly, concentrating the milk in cacao.-

In preparing my improved substitute for mothers milk fresh milk fromhealthy cows is immediately after receipt from the farmer thoroughlypurified by subjectingit primarily to the influence of air in a suitableaerator by which the adhering disagreeable flavor is removed. The milkis then transferred into a .filter containing carefully-cleaned gravelof uniform size, through which the milk is drawn by means of a vacuumand by Which any mechanical impurities contained in the milk areretained. From a portion of this aerated and filtered milk the cream isthen removed, and from the skimmed milk thus obtained the casein isremoved. The whey remaining is then purified by permitting it to passthrough a suitable cloth filter. The remaining portion of the aeratedand filtered milk is then mixed with the cream separated from thedecaseinized milk, and to the mixture is added the clear filtered whey.The required quantity of sugar is then added to this mixture and thesame slowly raised to the boiling-point and held for ashort time at theboiling-point, so as to evaporate in the open air.

It is then transferred into a closed apparatus, in which it is againfiltered and at the same time subjected to heat, so that the milk israised above the boiling-point, while all air is excluded, whereby thecasein still contained in the milk assumes the condition of the caseinin mothers milkz', a, it is converted into a loose pasty mass. By thisconversion of the casein and the heating of the milk the same isrendered easily digestible, while the bacilli are killed before the milkis transferred to the vacuunrpan. From the filtering and heatingapparatus the milk is now transferred, still under exclusion of air,into the vacuum-pan and in the same concen' trated to the requiredconsistency. It is then canned, and finally in the cans subjected to theusual sterilizing, so as to preserve the same for any length of time.

In my improved process no foreign substance except sugar is added tomilk, and the latter only so as to supply the same percentage of sugaras that contained in mothers milk.

The advantages of my improved process are, first, that by the aerationand filtration of the cows milk employed the foreign flavors andimpurities are removed before the same is subjected to furthertreatment; second, that by the filtering of the whey the same isrendered perfectly clear and free frdm casein before being mixed withthe remaining portions of the milk; third, by reducing the quantity ofcasein in the milk and adding a small percentage of sugar a product isobtained which approaches mothers milk closely in quality and which isvery advantageous for feeding infants and invalids; fourth, by thesecond filtration and superheating under exclusion of air after thewhey, cream, milk, and sugar are mixed all bacteria which may becontained in the milk are destroyed, so that the milk is conducted freeof bacteria into the vacuum-pan.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The process herein described of producing asubstitute for mothers milk, which consists, first, in aerating freshcows milk, second, filtering the same, third, removing the cream from aportion of the milk, fourth,

decaseinizing the so-obtained skimmed milk, In testimony thatyl claimthe foregoing as fifth, filtering the Whey thus obtained, sixth, myinvention I have signed my name in pres- 1o mixing with the whey theseparated cream, ence of two subscribing witnesses.

remaining portion of the milk and a small quantity of sugar, seventh,filtering and simultaneously heating the milk under exclusion of air,and lastly, concentrating the milk in vacuo, substantially as set forth.1

JOHN MEYENBERG,

Witnesses: v

R. E. SAILOR, H. B. MADISON.

